Calling Caufield a one trick pony is just not an accurate statement at all.
I mean ya, he does have one trick that has him producing some of the best numbers of all time at his age... But that doesn't mean that's the only trick he has.
He's still a very good passer, has absolutely fantastic hands which and he's an incredibly smart hockey player, which is what allows him to have so much success.
If it wasn't for his skating being just average, he would have been a Top 5 pick last year and would be basically as close to a guaranteed future 40 goal scorer as you could get from an 18 year old. Mind you I still have tonnes of confidence that he'll be a 40 goal scorer anyway.
The NHL also isn't what it once was. You are seeing more and more smaller players in the league that are not only playing in the league but having all kind of success as well. Gaudreau, Point, DeBrincat, Keller, Gourde, hell even Rocco Grimaldi is starting to find some success after years of struggling to break into the league.
Caufield has more pure skill than every single one of those guys.